Northern (2J3KL) Atlantic cod assessment framework

Thumbnail image

Download files

Language of the publication
English
Date
2024
Type
Report
Author(s)
  • Canadian Science Advisory Secretariat
  • Canada. Department of Fisheries and Oceans. Newfoundland and Labrador Region
Publisher
Center for Science Advice (CSA), Newfoundland and Labrador Region, Fisheries and Oceans Canada

Abstract

The assessment model for Atlantic Cod in Northwest Atlantic Fisheries Organization (NAFO) Divisions (Div.) 2J3KL was extended back to 1954 (previously starting in 1983) through the inclusion of additional tagging and landings data. This extended model has refined our understanding of past trends in the stock. Juvenile survey data from inshore monitoring programs were incorporated into the model which allowed for the implementation of a stock-recruitment relationship. New and prior research demonstrated that Capelin affect the dynamics of this cod stock. A Capelin index was included in the updated assessment model. The effects of Harp Seals on cod in Div. 2J3KL were investigated. However, a Harp Seal index could not be included in the current assessment model due to difficulty quantifying size-specific impacts and separating seal impacts from environmental effects. The Limit Reference Point (LRP) was updated following the significant model revisions and extension of the time series, and was set at 40% BMSY (biomass at maximum sustainable yield) in accordance with Precautionary Approach (PA) guidelines. Under this new framework, the spawning stock biomass was estimated at 1.16 times the LRP in 2021, with a 29% probability of being below the LRP. Current stock status was not updated in this meeting.

Description

1 online resource (18 pages) : illustrations, maps, charts

Subject

  • Nature and environment,
  • Water

Pagination

18 pages

Identifiers

Government document number
Fs70-6/2024-046E-PDF
ISBN
9780660730370
ISSN
1919-5087

Report

Report no.
2024/046
Series title
Science Advisory Report (Canadian Science Advisory Secretariat)

Citation(s)

DFO. 2024. Northern (2J3KL) Atlantic Cod Assessment Framework. DFO Can. Sci. Advis. Sec. Sci. Advis. Rep. 2024/046.

Download(s)

URI

Collection(s)

Fisheries

Full item page

Full item page

Page details

Date modified: